US6743133B2 - Chain drive, especially a camshaft/camshaft drive for a motor vehicle - Google Patents

Chain drive, especially a camshaft/camshaft drive for a motor vehicle Download PDF

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Publication number
US6743133B2
US6743133B2 US10/009,370 US937002A US6743133B2 US 6743133 B2 US6743133 B2 US 6743133B2 US 937002 A US937002 A US 937002A US 6743133 B2 US6743133 B2 US 6743133B2
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US
United States
Prior art keywords
chain
track
gears
drive according
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US10/009,370
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English (en)
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US20020137583A1 (en
Inventor
Thomas Fink
Peter Schulze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joh Winklhofer Beteiligungs GmbH and Co KG
Original Assignee
Joh Winklhofer and Soehne GmbH and Co KG
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Publication date
Application filed by Joh Winklhofer and Soehne GmbH and Co KG filed Critical Joh Winklhofer and Soehne GmbH and Co KG
Assigned to JOH. WINKELHOFER & SOHNE GMBH UND CO. KG reassignment JOH. WINKELHOFER & SOHNE GMBH UND CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FINK, THOMAS, SCHULZE, PETER
Publication of US20020137583A1 publication Critical patent/US20020137583A1/en
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Publication of US6743133B2 publication Critical patent/US6743133B2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains

Definitions

  • the present invention relates to a chain drive, in particular camshaft/camshaft drive for an automotive engine, the chain drive comprising at least two chain gears and a drive chain.
  • this object is achieved in that at least two chain gears are arranged in laterally offset relationship with one another in axial direction, the drive chain is a multiple-track chain, each of the offset chain gears has assigned thereto a separate track of the multiple-track chain due to the lateral offset, and the tip diameters of the offset toothed wheels are overlapping.
  • multiple-track chains are only used in fields where they are in engagement with a multiple-track chain gear to be able to transmit large forces.
  • a multiple-track chain is used for simultaneously driving chain gears that are laterally offset to one another, namely in the form that the chain gears are even overlapping. With a standard arrangement without a lateral offset, such an overlap would of course not be possible.
  • the number of teeth of the chain gears can be kept large despite the axial distance which is per se too small so as to achieve a run of the multiple-track chain that is as quiet as possible.
  • an even greater overlap would be possible.
  • the two chain gears should not be seated on a joint axle or shaft, but should drive different elements (e.g. camshafts).
  • the number of the offset chain gears can be chosen in dependence upon the number of the tracks of the multiple-track chain.
  • the chain gears can have different tooth numbers.
  • a respective support means is provided for the track of the multiple-track chain that is not in engagement with the associated chain gear.
  • the force of the chain gear acting on the multiple-track chain is asymmetrical relative to the longitudinal center line of the multiple-track chain, so that corresponding asymmetrical forces are acting thereon.
  • Support means help to prevent a lateral tilting of the multiple-track chain, whereby noise can once again be minimized because corresponding vibrations are suppressed.
  • Track means each time that part of the multiple-track chain that is laterally provided next to a chain gear but not in engagement therewith. Said track is of course in engagement with the respectively other chain gear.
  • an overlap of the chain gears is greater than the sum of the height of the plates of the multiple-track chain and of the difference of tip circle radius less pitch circle radius.
  • a support means integrated on the chain gear would come into contact with the gearing of the respectively other chain gear in the case of such a dimensioning rule.
  • slide rails as support means.
  • these are at a standstill relative to the chain gears, and the track is sliding therealong.
  • Slide rails have already been used in chain drives for very different purposes for a long time so that the problems associated therewith have already been solved in the prior art in many ways. Materials and, if necessary, also lubricant supply can readily be used for the slide rails. It is also possible to choose a multipart construction of the slide rails. Known is e.g. the use of a relatively stable basic body and a slide lining which is arranged thereon and can be removed and exchanged in part.
  • a distance of the slide surface of the slide rail may substantially be equal to half the plate height or half a roller height at least in the area of the wrap angle of the multiple chain on the associated chain gear to the pitch circle of the chain gear. It is here of importance whether the plates are to be supported by the support means or whether the rollers of a multiple-track chain are to be used for the support.
  • the dimensioning rule ensures that the hinge axes of the multiple-track chains are oriented as parallel as possible relative to the axes of the chain gears.
  • the slide rail comprises a transfer extension which supports the track of the multiple-track chain in the section between the overlapping chain gears.
  • a section remains in most cases between the two wheels where the multiple-track chain is neither in engagement with the one nor the other chain gear.
  • a support is also provided for this area.
  • the transfer extensions of the slide rails assigned to the overlapping chain gears can overlap and jointly support the multiple-track chain in the section between the overlapping chain gears.
  • both slide rails are equipped with such transfer extensions, a tilting movement of the multiple-track chain is also avoided in the intermediate part between the chain gears because the multiple-track chain is supported over its whole width.
  • a smooth entry or exit of the multiple-track chain is ensured when according to one embodiment a slide surface of the transfer extension passes tangentially into the adjoining remaining slide surface of the slide rail.
  • a bottom side of the slide rail which defines at least the transfer extension is arcuately adapted to the outer contour of the other chain gear.
  • this has even the effect that the multiple-track chain is completely supported between the exit point on the first chain gear and the exit point from the second one of the overlapping chain gears.
  • the transfer extensions are guided relatively close to the other chain gear, resulting each time in only small portions on which the track is not supported.
  • the multiple-track chain is respectively supported in said portions by the transfer extensions arranged in offset configuration relative thereto.
  • the bottom side of the transfer extension is each time adapted relatively close to the outer contour of the adjoining chain gear, so that a stable support of the slide surface can be realized without a design that is too filigree.
  • FIG. 1 is a schematic front view on the upper part of a camshaft/camshaft chain drive
  • FIG. 2 is a schematic top view on the chain drive of FIG. 1, wherein the slide chains have been omitted for the sake of clarity.
  • FIG. 1 shows the upper part of a camshaft/camshaft drive.
  • the first chain gear 1 is seated on a first camshaft 2
  • the second chain gear 3 is seated on a second camshaft 4 .
  • Chain gears 1 , 3 are connected to camshafts 2 , 4 by means of standard connection methods.
  • the arrangement of the chain drive in a chain case or a closed engine channel shall not be discussed in more detail in the following.
  • each of chain gears 1 , 3 has 40 teeth.
  • the pitch is 9.525 mm.
  • the two chain gears 1 , 3 have guided therearound a duplex chain 5 which is also in engagement with a gear (not shown) of the crankshaft.
  • the duplex chain is constituted by two plate type roller chains of a standard construction which are arranged in parallel with one another and interconnected by means of an intermediate pin plate. Such duplex chains 5 are also called double roller chains.
  • the axial distance A of the two chain gear axes has been chosen such that the two chain gears 1 , 3 are overlapping. However, as can be seen in FIG. 2, these are arranged to be laterally offset relative to one another when viewed in axial direction, so that they are arranged side by side in their overlap area 6 .
  • the chain gear 1 is positioned behind the chain gear 3 (starting from FIG. 1 ).
  • the center distance M of the two chain gears 1 and 3 relative to one another also corresponds to the associated center distance M of the duplex chain 5 and is 10.34 mm in the present embodiment. This center distance M could also be referred to as the offset of the two chain gears 1 , 3 .
  • FIG. 2 shows the overlap T of the pitch circles T D of the two chain gears 1 , 3 .
  • T is equal to 10 mm.
  • the tip diameters d K of the two chain gears 1 , 3 must also be taken into account for a support, which will still have to be described in more detail in the following.
  • a slide rail 9 and 10 is positioned laterally next to a chain gear 1 or 3 .
  • the wrap angle ⁇ of the duplex chain is 90° in the first chain gear 1 between entry point 11 and exit point 12 .
  • the second chain gear 3 in the case of which a wrap angle ⁇ of 90° is formed between entry point 13 and exit point 14 .
  • the slide rails 9 , 10 have an arcuate slide surface 15 and 16 , respectively.
  • the distance of the slide surfaces 15 , 16 relative to the associated pitch circle T D of the chain gears 1 or 3 is here equal to half the height H of a plate 17 of the duplex chain 5 .
  • each of the slide rails 9 , 10 has a transfer extension 20 and 21 , respectively.
  • the transfer extension 20 , 21 has the shape of a nose or a triangle, the slide surface of the transfer extension 20 , 21 passing tangentially into the remaining slide surface 15 and 16 , respectively, of the slide rails 9 , 10 .
  • the slide surface of the transfer extension 20 , 21 extends substantially along a straight line. As can be seen in FIG. 1, the two transfer extensions 20 , 21 are overlapping, so that both tracks 7 , 8 of the duplex chain 5 are supported in the area of the intermediate part 19 .
  • Each of the two slide rails 8 , 10 ensures that no tilting moments are acting on the duplex chain 5 and that, as a consequence, excessive vibrations will not arise, in particular, upon entry on a chain gear or exit from a chain gear.
  • the slide rails 9 , 10 may e.g. consist of a wear-resistant plastic material. However, it is also possible to produce the rails from a basic body of e.g. aluminum and to provide them with a slide lining which is possibly removable.
  • the bottom side 22 , 23 of the slide rails 9 , 10 which defines the transfer extension 20 , 21 is adapted to the outer contour of the adjoining chain gear 1 or 3 and arranged at a small distance from said wheel.
  • Each of the slide rails 9 , 10 is drawn down to the level of the entry point 11 and exit point 14 , respectively, and has a substantially arcuate form with the transfer extension 20 , 21 arranged at one side.
  • a truss structure increases the stability at a low weight.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Gears, Cams (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
US10/009,370 2000-04-19 2001-02-01 Chain drive, especially a camshaft/camshaft drive for a motor vehicle Expired - Fee Related US6743133B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10019458 2000-04-19
DE10019458.3 2000-04-19
DE10019458A DE10019458A1 (de) 2000-04-19 2000-04-19 Kettentrieb, insbesondere Nockenwellen/Nockenwellentrieb für einen Kraftfahrzeugmotor
PCT/EP2001/001050 WO2001081790A1 (fr) 2000-04-19 2001-02-01 Transmission par chaine, notamment entrainement arbre a cames/arbre a cames, d'un moteur de vehicule automobile

Publications (2)

Publication Number Publication Date
US20020137583A1 US20020137583A1 (en) 2002-09-26
US6743133B2 true US6743133B2 (en) 2004-06-01

Family

ID=7639360

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/009,370 Expired - Fee Related US6743133B2 (en) 2000-04-19 2001-02-01 Chain drive, especially a camshaft/camshaft drive for a motor vehicle

Country Status (7)

Country Link
US (1) US6743133B2 (fr)
EP (1) EP1185803B1 (fr)
JP (1) JP3704313B2 (fr)
AU (1) AU4056801A (fr)
DE (2) DE10019458A1 (fr)
ES (1) ES2198396T3 (fr)
WO (1) WO2001081790A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100737322B1 (ko) 2004-11-26 2007-07-09 조. 빈클호퍼 ＆ 쉐네 지엠비에치 ＆ 컴퍼니. 케이지 체인 휠과 정렬된 보조 휠을 구비한 체인구동장치

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5386116B2 (ja) * 2008-06-20 2014-01-15 ボーグワーナー インコーポレーテッド サイレントチェーン

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142041C (fr)
US4117813A (en) * 1974-08-12 1978-10-03 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine and method of operating it
JPS57210109A (en) 1981-06-19 1982-12-23 Suzuki Motor Co Ltd Engine of double overhead cam type
WO1983002307A1 (fr) 1981-12-24 1983-07-07 Reid, Paul, A. Agencement accessoire de transmission
DE3347638A1 (de) 1983-12-30 1985-07-18 Daimler-Benz Ag, 7000 Stuttgart Antrieb fuer zwei im zylinderkopf einer brennkraftmaschine angeordnete nockenwellen mittels eines umschlingungsgetriebes, wie steuerkette oder zahnriemen, von der kurbelwelle aus
US4553509A (en) * 1983-07-21 1985-11-19 Harley-Davidson Motor Co., Inc. Chain drive of a reciprocating-piston internal combustion engine
DE3516097A1 (de) * 1985-05-04 1986-11-06 Reinhold 7405 Dettenhausen Schmid Rollenfoerderer
US4951616A (en) * 1989-02-10 1990-08-28 Nissan Motor Co., Ltd. V-type engine
US4971000A (en) * 1989-05-01 1990-11-20 Nissan Motor Co., Ltd. Camshaft driving arrangement for double overhead camshaft engine
US5000142A (en) * 1989-02-08 1991-03-19 Nissan Motor Co., Ltd. Chain cover apparatus for engine
DE4118862A1 (de) 1991-06-07 1992-12-10 Audi Ag Umschlingungstrieb
US5216984A (en) * 1991-07-26 1993-06-08 Nissan Motor Co., Ltd. V-type internal combustion engine with improved water pump driving arrangement
EP0575044A1 (fr) 1992-05-15 1993-12-22 Ford Motor Company Limited Entraînement d'arbre à cames pour moteur automobile
JPH06248968A (ja) * 1993-02-26 1994-09-06 Suzuki Motor Corp エンジンの動弁装置
US5471895A (en) 1993-01-18 1995-12-05 Tsubakimoto Chain Co. Camshaft driving mechanism of double overhead camshaft engine
JPH10121914A (ja) * 1996-10-18 1998-05-12 Yamaha Motor Co Ltd Ｄｏｈｃ型エンジン

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142041C (fr)
US4117813A (en) * 1974-08-12 1978-10-03 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine and method of operating it
JPS57210109A (en) 1981-06-19 1982-12-23 Suzuki Motor Co Ltd Engine of double overhead cam type
WO1983002307A1 (fr) 1981-12-24 1983-07-07 Reid, Paul, A. Agencement accessoire de transmission
US4553509A (en) * 1983-07-21 1985-11-19 Harley-Davidson Motor Co., Inc. Chain drive of a reciprocating-piston internal combustion engine
DE3347638A1 (de) 1983-12-30 1985-07-18 Daimler-Benz Ag, 7000 Stuttgart Antrieb fuer zwei im zylinderkopf einer brennkraftmaschine angeordnete nockenwellen mittels eines umschlingungsgetriebes, wie steuerkette oder zahnriemen, von der kurbelwelle aus
DE3516097A1 (de) * 1985-05-04 1986-11-06 Reinhold 7405 Dettenhausen Schmid Rollenfoerderer
US5000142A (en) * 1989-02-08 1991-03-19 Nissan Motor Co., Ltd. Chain cover apparatus for engine
US4951616A (en) * 1989-02-10 1990-08-28 Nissan Motor Co., Ltd. V-type engine
US4971000A (en) * 1989-05-01 1990-11-20 Nissan Motor Co., Ltd. Camshaft driving arrangement for double overhead camshaft engine
DE4118862A1 (de) 1991-06-07 1992-12-10 Audi Ag Umschlingungstrieb
US5216984A (en) * 1991-07-26 1993-06-08 Nissan Motor Co., Ltd. V-type internal combustion engine with improved water pump driving arrangement
EP0575044A1 (fr) 1992-05-15 1993-12-22 Ford Motor Company Limited Entraînement d'arbre à cames pour moteur automobile
US5471895A (en) 1993-01-18 1995-12-05 Tsubakimoto Chain Co. Camshaft driving mechanism of double overhead camshaft engine
JPH06248968A (ja) * 1993-02-26 1994-09-06 Suzuki Motor Corp エンジンの動弁装置
JPH10121914A (ja) * 1996-10-18 1998-05-12 Yamaha Motor Co Ltd Ｄｏｈｃ型エンジン

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100737322B1 (ko) 2004-11-26 2007-07-09 조. 빈클호퍼 ＆ 쉐네 지엠비에치 ＆ 컴퍼니. 케이지 체인 휠과 정렬된 보조 휠을 구비한 체인구동장치
CN100449171C (zh) * 2004-11-26 2009-01-07 约翰文科霍夫&索芬两合有限公司 具有链轮和对准的支撑轮的链传动装置

Also Published As

Publication number Publication date
JP3704313B2 (ja) 2005-10-12
AU4056801A (en) 2001-11-07
JP2003532030A (ja) 2003-10-28
DE50100222D1 (de) 2003-06-12
US20020137583A1 (en) 2002-09-26
EP1185803B1 (fr) 2003-05-07
DE10019458A1 (de) 2001-12-20
WO2001081790A1 (fr) 2001-11-01
EP1185803A1 (fr) 2002-03-13
ES2198396T3 (es) 2004-02-01

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Owner name: JOH. WINKELHOFER & SOHNE GMBH UND CO. KG, GERMANY

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Effective date: 20120601